Synthetic nanofibers are found in many everyday products, from our clothes and towels to plastic containers, carpets, and cosmetics. However, these fibers are not biodegradable and often pollute the air and water we rely on. This pollution can cause health problems such as respiratory issues, skin conditions, and hormone disruptions.
Symone Alexander, an assistant professor in the Department of Chemical Engineering, is developing a safer alternative. She extracts cellulose nanofibers from pecan shells, a material usually discarded or used as mulch. Pecan shells are rich in cellulose, making them a good source for nanofiber production.
“My process is low-cost and meets consumer needs, environmental goals, and regulatory standards,” Alexander said. “We are turning agricultural waste into high-performance materials. This approach represents the future of sustainable, bio-based manufacturing.”
Alexander’s project, called “Shellulose,” was chosen as one of nine startups to join the Alabama Biomanufacturing Program (ABP). This program supports innovative companies that promote growth and technology in biomanufacturing across the state. Shellulose will receive research funding, legal help, and infrastructure support to build a nanofiber production facility.
The ABP is a collaboration between Opportunity Alabama, Measured Capital, Arrowpoint Labs, and Innovate Alabama. Its goal is to connect universities, researchers, and industry partners to boost Alabama’s economy and support startups, especially in rural areas.
Arrowpoint Labs Associate Director Luke Brazinski said, “This program helps remove barriers that scientists and entrepreneurs face. We cover legal costs and provide strategic support so companies can grow and attract funding.”
Alexander’s project builds on her 2023 National Science Foundation grant, which focused on extracting lignin from pecan shells. With ABP support, her lab plans to scale up production to one to three kilograms of nanofibers daily. This will involve improving the extraction process, ensuring consistent fiber quality, and preparing for commercial use.
Alexander emphasized her goal: “I want to combine high performance with sustainability. Products shouldn’t force us to choose between effectiveness and environmental safety.”
For raw materials, Alexander partners with Pecanderosa Orchard, a family farm near Notasulga, Alabama. “Pecans are abundant in rural Alabama,” she said. “The U.S. is the world’s largest pecan producer, and 60% of the harvest ends up as lignocellulosic waste. That means plenty of material to work with. Local farmers have been very supportive and excited about turning waste into value.”
Alexander hopes this initiative will energize biomanufacturing in Alabama. “I look forward to connecting with other startups and building a strong network. The Alabama Biomanufacturing Labs Program is vital. It links us with funding, professional development, and collaboration opportunities.”
She added, “We urgently need to rethink how we make materials. Developing cellulose fibers that decompose naturally without polluting water can make a real difference for the environment and future generations.”
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